如何在颤振中禁用手机回按

Question

我是 Flutter 开发的新手。谁能分享我如何禁用后按flutter？

在Android中，我们可以使用onbackpressed方法。

@Override
public void onBackPressed() {
  // super.onBackPressed(); commented this line in order to disable back press
  //Write your code here
  Toast.makeText(getApplicationContext(), "Back press disabled!", Toast.LENGTH_SHORT).show();
}

在flutter如何可能呢？

Answer 1

将您的小部件包裹在里面WillPopScope并Future在onWillPop属性中返回 false

    @override
    Widget build(BuildContext context) {
      return WillPopScope(
        onWillPop: () => Future.value(false),
        child: Scaffold(
          appBar: AppBar(
            title: const Text("Home Page"),
          ),
          body: Center(
            child: const Text("Home Page"),
          ),
        ),
      );
    }

请参阅此文档：https : //api.flutter.dev/flutter/widgets/WillPopScope-class.html